KEY TO THE GENERA. 



BRIGHT GREEN ALG.«. 

 I. FrON-D MF-NinRANOUS. 



I. Color Green, 

 (tf.) Frond, wide, long and thin, ilic 1 

 green Algx. 



(^.) Frond, narrow, sometimes inflated, alwa)'s 



tubular. 



Enteromorpha, 



a. Color, Bnmm cr Purple. 

 Frond, ihin, translucent, sheeny, saiin-Uke. 



Porphyra. 

 II. Frond F'lumRM. 



I. Frond Vnbraniked, 

 Sometimes attached, straight and 



sometimes floating, kinked and mailed 



like wool 



Chatomorpha. 



2. Frond Branehed, 



(fl.) Stem and (straight) branches each a 



single cell, not jointed. 



Bryopsis, 



(3.) Stem and branches jointed, that is, 

 composed of short single cells at- 

 tached end to end. 



Cladophora. 



